Three ships of the Brazilian Navy have been named Rio Grande do Sul:
- Brazilian cruiser Rio Grande do Sul, a Bahia-class cruiser launched in 1909 and decommissioned in 1948
- Brazilian submarine Rio Grande do Sul (S11) (Balao class), the former American Balao-class submarine USS Sand Lance (SS-381); in Brazilian Navy service, 1963–1972; cannibalized for spare parts and scrapped by 1975
- Brazilian submarine Rio Grande do Sul (S11) (Tench class), the former American Tench-class submarine USS Grampus (SS-523); in Brazilian Navy service, 1973–1993
List of ships with the same or similar names
This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.
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